Thank you!
In Guerilla, you are correct - it is the fire that causes issues! I packaged a fixed version, but ran out of time unfortunately. The fire keeps creating dynamic lights until it brings the framerate all the way down and eventually hangs the game. Thankfully that full process takes a LONG time, but it still hurts performance a lot right of the bat.
Crashes in the boss arena are generally only heard of with RTX 20XX cards; is there a .dmp file that you could send me to look into? Also, did you have SteamVR open? Try exiting SteamVR before entering Finale, it's a known issue.
The robots in 1969 is because it is a Terminator-like scenario; the aliens have gone back in time to assert their presence in the past in order to control the future, so you go back to wipe them out. There is an audio clip that is supposed to explain this but I discovered afterwards that it never plays for some reason, leaving the player with no explanation. You can go back in time mid way through the boss if you stand in the right places, but when she moves to Phase 2 and begins teleporting she can follow you back to stop you from abusing it.
Thanks for the feedback! I'm actively looking into debugging & fixing the crashes.